Improvement in plows



.|. T. THOMPSON.

Shovel Piowx No. 28,919. Patented lune 26, 1860.

e "Inventors Witnessesf 5 UNITED STATES PATENT OFFICE.

JOHN T. THOMPSON, OF JACKSON, TENNESSEE.

IM PROVEM ENT IN PLOWS.

Specification forming part of Letters Patent No. 28,919, dated June 26,1860.

To all whom it may concern:

Be it known that I, JOHN T. THOMPSON, of Jackson, in the county ot'Madison and State ot' Tennessee, have invented certain new and usefulImprovements in Plows; and I do hereby declare the followingto be afull,elear, and exact description of the same, reference being had tothe accompanying drawings, making a part of this specilication, inwhich- Figure l represents a perspective View of the plow complete. Fig.2 represents a perspective View of the stock with the mold-boardremoved. Figs. 3 and 4 represent perspective views of dierentmold-boards or wings that may be used on the stock.

Similar letters of reference, where they occur, denote like parts oftheplow in all the figures.

My invention relates to the construction of theplow and the mannerofuniting the several parts thereof, as will be explained in connectionwith the drawings.

The beam A and handles B may be of wood, and made and united in anyofthe well-known ways.

O is a skeleton-frame having two Vertical sides, a b,and one horizontalside,c. The Vertical side or piece a serves as a brace and colter both,its front edge being sharpened to divide the earth. Its top is furnishedwith a foot or bearing-piece, upon which the beam lies, and to which thebeam is bolted by a bolt, c. The other vertical piece, b, has also afoot or bearing,f, upon which the beam also rests, and to which the beamis bolted by a bolt, g. The third side or piece forms the sole of theplow, and the whole makes afranie-work to which the wings and pointareattached. The piece a has bolt-holes, h h, through it, and the point t'ofthe frame is flattened ont and furnished with a bolthole,by which theplowpointj, is secured to it.

The mold-boards or wings D havea flange, k, upon them, furnished withbolt-holes corresponding with those hh in the piece a, through whichbolts pass to secure the pieces firmly to the stock. The mold-boards orwings set a little back of the front or cutting edge of the piece a, andat their lower ends overlap the upper part ofthe plow-pointy', whichplowpoint has a slot in it, soas to straddle the colter-piece a.

I have represented the plow in Fig. 1 as having two mold-boards orwings. One only may be used when the particular character of the work orofthe soil may require it, and these mold-boards may be more or lesscurved or inclined from the colter to their extremities, but alwayscurved or inclined vertically to suit the curvature 0r inclination ofthe colter.

.Having thus fully described the construction of my plow, what I claim.is-

Thei'rameG, with its plow-point j, and wings o r mold-board D, when thewhole is constructed, arranged, and united as herein set forth anddescribed.

JNO. T. THOMPSON.

Witnesses:

A. B. SToUGHToN, I. HIRsCH.

